CMC Textile Printing Dyeing Grade

The main performance indicators of CMC for Printing and Dyeing are as follows:

- Degree of Substitution: Generally between 0.6 and 0.9. This indicator affects its solubility, thickening properties, etc. A suitable degree of substitution allows sodium carboxymethyl cellulose to function better in the printing and dyeing process.

- Viscosity: Wide viscosity range, commonly from several hundred to several thousand millipascals per second. Suitable viscosity helps control the flowability of the printing and dyeing solution, ensuring the uniformity of the printing and dyeing effect.

- Purity: High purity and fewer impurities reduce adverse effects on printing and dyeing quality, ensuring the purity and stability of the printed and dyed colors.

- pH: Typically around 6-8. A stable pH environment is beneficial for maintaining its performance stability in the printing and dyeing process.

- Solubility: It dissolves well in water, forming a homogeneous solution, which facilitates mixing with other printing and dyeing components and allows for better application in the printing and dyeing process.

*These performance indicators work together to influence the effectiveness of CMC for printing and dyeing in the printing and dyeing industry, playing a crucial role in improving printing and dyeing quality.

Highly substitutable CMC can be used as a thickener for various textile printing pastes. It exhibits excellent acid and salt resistance (i.e., electrolyte resistance), and its viscosity remains stable after formulation into pastes and printing pastes. It can completely replace high-quality alginate. This product has the following characteristics:

1. More stable quality compared to natural pastes

2. Good flowability and uniform dyeing

3. High substitutability reduces reaction with reactive dyes, resulting in a soft hand feel on printed materials

4. Minimal gel particles, preventing printing defects

5. Excellent color yield

Mechanism of Action of Sodium Carboxymethyl Cellulose (CMC) in Printing and Dyeing

-Thickening Effect: CMC molecular chains extend in water to form a network structure, effectively increasing solution viscosity and ensuring uniform dispersion of dyes, pigments, or auxiliaries.

-Dispersion and Stabilization Effect: Through electrostatic repulsion and steric hindrance, CMC prevents dye particles from agglomerating or settling.

-Rheological Control: CMCs with different degrees of substitution and molecular weights can achieve customized rheological properties to meet the requirements of various processes such as printing, dip dyeing, and spray dyeing.

-Film Formation and Adhesion: Forms a protective film on the fiber surface, improving dye adhesion and color fastness.

In conclusion, Textile Printing Grade CMC is not only an important auxiliary agent in traditional printing and dyeing processes, but also a key raw material for achieving efficient, energy-saving, and green production in the modern textile industry.

Selecting the appropriate CMC type and optimizing the formula and process parameters can significantly improve printing and dyeing quality, reduce costs, and bring more stable production benefits and brand competitiveness to enterprises.